English Dictionary

logarithm

IPA（発音記号）

/ˈlɑ.ɡə.ɹɪ.ð(ə)m/

名詞

(mathematics) For a number x, the power to which a given base number must be raised in order to obtain x. Written log _bx. For example, log ₁₀1000=3 because 10³=1000 and log ₂16=4 because 2⁴=16.

日本語の意味

数学において、ある数xに対して、与えられた底（基数）のべき乗でxを得るための指数（何乗すればxになるか）を示す概念。

Calculating the logarithm of 1000 with base 10 shows that log₁₀1000 = 3 because 10³ = 1000.

底が10の1000の対数を計算すると、10³＝1000なのでその値は3です。

意味（1）

(mathematics) For a number x, the power to which a given base number must be raised in order to obtain x. Written log _bx. For example, log ₁₀1000=3 because 10³=1000 and log ₂16=4 because 2⁴=16.

For a currency which uses denominations of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, etc., each jump in the base-10 logarithm from one denomination to the next higher is either 0.3010 or 0.3979.

logarithms （ plural ）